变刚度双层隔振系统仿真分析  

Simulation and Analysis of Variable Stiffness Double-layer Vibration Isolation System

作　　者：姚俊辉[1] 宋春生[1] 

机构地区：[1]武汉理工大学机电工程学院,湖北武汉430070

出　　处：《武汉理工大学学报（信息与管理工程版）》2010年第5期750-753,共4页Journal of Wuhan University of Technology：Information & Management Engineering

基　　金：国家自然科学基金资助项目(50675163)

摘　　要：针对宽频扰动时双层隔振系统对低频扰动隔振效果差的问题,将具有可控刚度的磁悬浮隔振器与金属弹簧隔振器并联,实现双层隔振系统刚度的调节。主机从启动到运转至最低稳定转速以及在最低稳定转速处稳定运转时,通过改变磁悬浮隔振器通电电流大小,研究双层隔振系统在不同电流作用下对主机扰动的隔振效果。仿真结果表明,通过改变磁悬浮隔振器电流大小来调节双层隔振系统的刚度,能够改善双层隔振系统对主机低频扰动隔振效果差的问题。The ordinary double-layer vibration isolation system cannot efficiently isolate low frequency vibration when the external disturbance is broadband.To solve this problem,the stiffness of vibration isolation system can be adjusted by using parallel connection vibration isolator consisting of magnetic suspension isolator and metal spring vibration isolator.The stiffness of magnetic suspension isolator is negative and adjustable.When the main engine started from zero to the minimum stable speed while the main engine steady operating at the minimum stable speed,the current of magnetic suspension isolator was changed to investigate the vibration isolation effect of double-layer vibration isolation system.The simulation result indicated that double-layer vibration isolation system can do better at low frequency disturbance of main engine by changing the current of magnetic suspension isolator to adjust the stiffness of double-layer vibration isolation system.

关 键 词：双层隔振 磁悬浮隔振器 负刚度 非线性 

分 类 号：TH113.1[机械工程—机械设计及理论]